<div>
  <div style="border: solid 5px green;">
    <div style="margin: 100px; border: solid 5px purple; background-color: red; width: 60px; height: 60px;">
      margin: 7px;
    </div>
  </div>
  <div style="margin: 100px 50px; background-color: red; width: 60px; height: 60px;">
    margin: 10px 5px;
  </div>
  <div style="margin: 100px 50px 30px 10px; background-color: red; width: 60px; height: 60px;">
    margin: 10px 5px 3px 1px;
  </div>
</div>
